For each of the
following interactions, identify the action andreaction
forces:

a. a hammer hits a nail.
b. earth's gravity pulls down on a book.
c. a helicopter blade pushes
airdownward.

Air flows upward in the wick of a lantern because of the liquid property called

Which of the following would not be taken into consideration when describing the quality of a sound

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.